In the set of natural numbers, every number is either odd or even.
在自然数的集合里，每个数字不是奇数就是偶数。
The simplest real Numbers are the natural Numbers, which are just the ordinary counting number l, 2, 3...
最简单的真数是自然数，即平时我们口数的一、二、三…。
If it was changed, a one-one correspondence between continuum and natural number set can be received.
如改变前提，是可以得到连续统与自然数集合间的一个一一对应的。
The prime number is a natural number that has exactly two different divisors, i. e. 1 is not a prime number.
质数是指仅有两个约数的自然数，例如，1不是一个质数。
Then we say that for any other natural number, that fibonacci number is the sum of the previous two fibonacci numbers.
然后就是对其他自然数，其fibonacci数就是它前面两个数字的和，即F(N)=F(N-1)+F(N-2)。
A prime number is an integer greater than or equal to 2 that has exactly two distinct natural number divisors, 1 and itself.
素数是指大于等于2且只有两个不同约数的整数：1和它自己。
You could think of this correspondence as a buddy system in which each natural number is paired with some positive fraction, and vice versa.
可以把这种对应看作是各负责另一人之安全的两人同行制，每一个自然数都与某个正分数配对，反之亦然。
In the set of natural Numbers, every number is either odd or even, and there is not one even number that is more or less even than any other even number.
在自然数的集合里，每个数字不是奇数就是偶数，不存在一个偶数或多或少比另一个偶数更像偶数这样的情形。
In a problem concerning the natural number, the way of seeking recursion relationship and getting the reseclt from primary value recursion is called recursion method.
在一个与自然数有关的问题中，通过寻找递推关系，由初始值递获得所需结果的方法称之为递推法。
The natural number coding, the random population selection, the simple crossover strategy of "two-parents-and-one-kid" and the fixed mutation probability were totally adopted.
在算法中采用了自然数编码、随机选取种群、简单的“双亲单子”交叉策略和固定的突变概率。
The algorithm used natural number coding method with dynamically adjustment for the probability coefficients of crossover and mutation, and used chaos optimization method as the mut.
对于模型的求解方法，构造了一种自适应的混沌遗传算法，采用自然数编码方式，动态的在线调整算法的交叉和变异概率，并采用混沌优化方法作为变异算子。
It introduces the natural number coding method, adaptive probabilities of crossover and mutation, and furthermore, makes use of heuristic information to improve search efficiency effectively.
算法采用自然数编码，自适应的交叉变异算子，并融入启发式信息有效地提高了搜索效率。
A cold spring will provide a natural check on the number of insects.
寒冷的春季会自然控制昆虫的数量。
Because it is an area of outstanding natural beauty, the number of boats available for hire on the river is limited.
这是一个自然风景极美的地方，所以河上可供租用的船只数量有限。
A number of scientists question the assumption that the presence of alien species can never be acceptable in a natural ecosystem.
一些科学家质疑这样的假设，即在自然生态系统中，外来物种的出现是绝对不会被接受的。
In the nineteenth century, scientists made a number of important, but unsuccessful attempts to calculate Earth's age from the record of various natural processes.
19世纪，科学家们做了许多重要的尝试，希望通过各种自然过程的记录来计算地球的年龄，但都未能成功。
To limit the number of telescopes on Mauna Kea, old ones will be removed at the end of their lifetimes and their sites returned to a natural state.
为了控制莫纳克亚山上望远镜的数量，旧望远镜将在使用寿命结束时被移除，因此这些场地将恢复到自然状态。
The grand mediocrity of today—everyone being the same in survival and number of offspring—means that natural selection has lost 80% of its power in upper-middle-class India compared to the tribes.
当今人与人在很大程度上的平等——即面对自然淘汰法则人人机会均等，并且连子嗣的数目都一样——意味着和在印度土著部落中的情况相比，印度中上层阶级中已丧失了80%的自然选择中的优势。
The grand mediocrity of today - everyone being the same in survival and number of offspring - means that natural selection has lost 80% of its power in upper middle class India compared to the tribes.
今天这种极其显著的平均化——每个人的生存机会和子女数量都相同——意味着，与部落相比较，自然选择在印度中上阶层已经失去了80%的效力。
The grand mediocrity of today everyone being the same in survival and number of offspring means that natural selection has lost 80% of its power in upper-middle-class India compared to the tribes.
今天这种极其显著的平均化——每个人的生存机会和子女数量都相同——意味着与部落相比较，自然选择在印度中上层已经失去了80%的作用。
The estuary keeps the surrounding land rich and fertile and provides a natural habitat for a number of threatened species, including the rare la Plata dolphin.
这处河口为周边地区带来了肥沃而富饶的土地，同时也为多种濒危物种如数量稀少的拉普拉塔海豚提供了自然栖息地。
Utilities have commissioned a number of projects to expand plants above natural deposits in North America.
北美的公共事业部门已经授权多个计划在天然蒸汽床上建设电站。
Prevention and control relies heavily on reducing the number of natural and artificial water-filled container habitats that support breeding of the mosquitoes.
预防和控制很大程度上是要减少住地那些有助蚊子滋生的自然和人为容器的数量。
For Cultural exchange it is necessary that the tourist number is low and that the interaction is natural meaning the hosting locals are unaffected or unpretentious in their approach.
在文化交流方面，控制游客数为少量是必要的，如果交流互动是自然的，这意味着对于游客的接近，当地主人能保持低调谦逊并不受其影响。
While it's unclear how many of these products also claim to be natural, given all the greenwashing going on these days, it's likely to number in the thousands.
但是不清楚这些产品有多少声称是天然的，如今公司为树立支持环保的形象而做虚假公关，因此这样的产品很可能数以千计。
Using the natural reflectivity of ceilings and walls, a transmitted infra-red signal can be received by any number of receivers within a room.
利用天花板和墙面的自然反射性，传送的红外信号能够被一个屋子里的所有接收器接收到。
This natural process has been vastly accelerated and amplified by a number of human practices, behaviours, and policy failures.
人类的一些做法、行为和政策失误，大大加速并放大了这一自然过程。
This natural process has been vastly accelerated and amplified by a number of human practices, behaviours, and policy failures.
人类的一些做法、行为和政策失误，大大加速并放大了这一自然过程。
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